/** @file

  Copyright (c) 2004  - 2014, Intel Corporation. All rights reserved.<BR>
                                                                                   
  SPDX-License-Identifier: BSD-2-Clause-Patent

                                                                                   

Module Name:

Module Name:

    LpcSio.c

Abstract: Sio implementation

Revision History

--*/

#include "LpcDriver.h"
#include <Library/S3BootScriptLib.h>

VOID
WriteRegister (
  IN  UINT8   Index,
  IN  UINT8   Data
  );

typedef struct {
  UINT8 Register;
  UINT8 Value;
} EFI_SIO_TABLE;

EFI_SIO_TABLE mSioTable[] = {
  //
  // Init keyboard controller
  //
  { REG_LOGICAL_DEVICE, SIO_KEYBOARD },
  { BASE_ADDRESS_HIGH, 0x00 },
  { BASE_ADDRESS_LOW, 0x60 },
  { BASE_ADDRESS_HIGH2, 0x00 },
  { BASE_ADDRESS_LOW2, 0x64 },
  { PRIMARY_INTERRUPT_SELECT, 0x01 },
  { ACTIVATE, 0x1 },

  //
  // Init Mouse controller
  //
  { REG_LOGICAL_DEVICE, SIO_MOUSE },
  { BASE_ADDRESS_HIGH, 0x00 },
  { BASE_ADDRESS_LOW, 0x60 },
  { BASE_ADDRESS_HIGH2, 0x00 },
  { BASE_ADDRESS_LOW2, 0x64 },
  { PRIMARY_INTERRUPT_SELECT, 0x0c },
  { ACTIVATE, 0x1 },

  { REG_LOGICAL_DEVICE, SIO_COM },
  { BASE_ADDRESS_HIGH, 0x03 },
  { BASE_ADDRESS_LOW, 0xf8 },
  { PRIMARY_INTERRUPT_SELECT, 0x04 },
  { ACTIVATE, 0x1 },


};

VOID
LPCWPCE791SetDefault ()
{
  UINT8           Index;

  for (Index = 0; Index < sizeof(mSioTable)/sizeof(EFI_SIO_TABLE); Index++) {
    WriteRegisterAndSaveToScript (mSioTable[Index].Register, mSioTable[Index].Value);
  }

  return;
}

VOID
DisableLogicalDevice (
  UINT8       DeviceId
  )
{
  WriteRegisterAndSaveToScript (REG_LOGICAL_DEVICE, DeviceId);
  WriteRegisterAndSaveToScript (ACTIVATE, 0);
  WriteRegisterAndSaveToScript (BASE_ADDRESS_HIGH, 0);
  WriteRegisterAndSaveToScript (BASE_ADDRESS_LOW, 0);

  return;
}

VOID
WriteRegister (
  IN  UINT8   Index,
  IN  UINT8   Data
  )
{
  LpcIoWrite8(CONFIG_PORT, Index);
  LpcIoWrite8(DATA_PORT, Data);

  return;
}

VOID
WriteRegisterAndSaveToScript (
  IN  UINT8   Index,
  IN  UINT8   Data
  )
{
  UINT8  Buffer[2];

  LpcIoWrite8(CONFIG_PORT, Index);
  LpcIoWrite8(DATA_PORT, Data);

  Buffer[0] = Index;
  Buffer[1] = Data;
  S3BootScriptSaveIoWrite (
    EfiBootScriptWidthUint8,
    INDEX_PORT,
    2,
    Buffer
    );

  return;
}

